... Strengthens each finger individually2,Available in 4 graduated resistance levels, finger power:5kg,10kg,15kg,25kg ect different ... ,finger,wrist and forearm strength5,Increase control, distance and feel, good endurance quality6,increase grip strength, endurance, and ... 7,Simple, effective, build repetitive muscle memory and increase dexterity 8,Perfect for training and injury rehabilitation9.suitable ...